R156 road
Bóthar R156
Heading east after leaving the N4
Route information
Length	60 km (37 mi)
Location
Country	Ireland
Primary destinations	County Meath Dunboyne – R157 Mullagh, County Meath R125 Kilmore Cross Roads Joins R158 Summerhill – leaves R158 R163 Rathmolyon – R159 R160 R161 Scariff Bridge crosses the River Boyne Ballivor County Westmeath Raharney Killucan The Downs; terminates at the N4
Highway system
Roads in Ireland Motorways Primary Secondary Regional

The R156 road is a regional road in Ireland, linking Dunboyne in County Meath to the N4 (near Mullingar) in County Westmeath. The road is single carriageway throughout. Many parts of the route have dangerous bends.

From East to West, the R156 leaves the town of Dunboyne. The remainder of the route is through rural Meath and Westmeath, passing through the villages of Mullagh, Summerhill, Rathmolyon and Ballivor in Meath and Raharney and Killucan in Westmeath before connecting to the N4 at The Downs east of Mullingar. It joins the N4 at an at-grade junction with a busy dual-carriageway.^{[citation needed]}

• Roads in Ireland
• National primary road
• National secondary road

• Roads Act 1993 (Classification of Regional Roads) Order 2006 – Department of Transport